Evidence row 3986515

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://acube.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/acube/"
    ]
  ],
  "name": "A-Cube MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-07T21:55:56.476674Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T21:55:56.476674Z",
        "updatedAt": "2026-11-07T21:55:56.476674Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read Italian invoices, receipts and SDI notices; validate, prepare and submit agreed drafts.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://usefulapi.io/icon.svg"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "256x256"
          ],
          "src": "https://usefulapi.io/icon-256.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulapi.io/icon-512.png"
        }
      ],
      "name": "io.usefulapi/acube",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://acube.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/acube",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "A-Cube MCP by usefulapi",
      "version": "1.8.5",
      "websiteUrl": "https://usefulapi.io/acube/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read Italian invoices, receipts and SDI notices; validate, prepare and submit agreed drafts."
}

What the leaf hashes

{"body":"a54537d2697d2712aef2ac0332f6185018796d5ef53cb5312c8ee4a07aa43462","id":3986515,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794090323526789,"prev":3957761,"subject":"mcp_registry:io.usefulapi/acube","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-07 (195826 rows).

1. 0x3884aa54e00a9d5cba62413efd85e279fb6c55eb6a72618f2c63d4b9bf9de24b
2. 0x33db3988d7e5aa3f0b71a03805cd4ee36c89110ddec212aed31ea726e8e047e9
3. 0x911499ec4e22a46d20ed9594ca2df65c2b083e33147b0791a73cca97fc6bb19b
4. 0xc93f7cf2b93d4d2bfa4a2c310480986dd93a709c35c4a2ef563c7188980be357
5. 0xfb396790be90c04a92843935f0be06d6686585a7d2c43cdb5e429d086f1a4f08
6. 0x4f1530a8e1582738d6619c88ba913815204e4d4f2309db7f683a2ad549ca955e
7. 0x4abf9e59f6c9e0ff9ba4f02c091b2572e10202ce19e00cc4227d55f1c210bb2e
8. 0xd4e9268da854997d954adab4d785cf0c1bdf58cd7b4ae13809cd93a5f1b65881
9. 0x687710fdf84964408cda5fd86832bdb4eb47fedfcc7a0121793571497108d271
10. 0x5f85edf865d9f07894aa13af4b2fd0ab26eeffb9a1dace3b6cee3d18e1e6ed98
11. 0x8b09a2f98363aa738e2fe2ca9c0bb83170d464618708f3ae9001d724aa36f13c
12. 0xe0fd6bdad452f0929ca722fcfc903c57c119d36e84b77b4829114206f3d84327
13. 0xc6da265da8cd33013b85c9c3406fb7cb01a279b8af0bdd0dc0fbf3e7907dc964
14. 0xb96cde31376f2620034d37eacb768d6239f6799d719ac01516ef133c0df4dda5
15. 0xa3ca92229f3aac0e9b561aaa066ca1907adc3f0b1685587fa30369d41cf66004
16. 0xf0a56561418cd0342a328707933cc222d8fa725efff7ffd081e0226ee8c46c0b
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa